Home / 158,720.60-219,038.02-87,105.16

Finding the Fourth Proportional to 158,720.60, 219,038.02 and 87,105.16

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Solution

The fourth proportional to 158,720.60, 219,038.02 and 87,105.16 is: 120,207.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,720.60 : 219,038.02 = 87,105.16 : x
  2. Step 2: Convert to fraction form
    158,720.60/219,038.02 = 87,105.16/x
  3. Step 3: Cross multiply
    158,720.60x = 219,038.02 × 87,105.16
  4. Step 4: Simplify right side
    158,720.60x = 19,079,341,778.18
  5. Step 5: Solve for x
    x = 19,079,341,778.18/158,720.60
  6. Step 6: Final answer
    x = 120,207.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.